html {
  width: 100%;
  height: 100%;
  box-sizing: border-box;
}
body {
  width: 100%;
  height: 100%;
  position: relative;
  top: 0;
  left: 0;
  margin: 0;
  padding: 0;
  -moz-osx-font-smoothing: grayscale;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-family: Helvetica Neue, Helvetica, PingFang SC, Hiragino Sans GB, Microsoft YaHei, Arial, sans-serif;
}
#app {
  width: 100%;
  height: 100%;
}
